/**
 * Copyright 2000 self.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 * 	The greatest achievement is selflessness. The greatest worth is self-mastery.
 * 	The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 * 	The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 * 	The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 * 	The greatest goodness is a peaceful mind. The greatest patience is humility.
 * 	The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 * 	The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 *
 * @author Ashin Wimalajeewa
 */
package self.amigo.editor.layer;

import java.util.*;
import java.awt.*;

import self.gee.*;

public class GrabHandlesLayer implements ILayer {
  final static public int HANDLE_GROW_SZ = 3;
  
  public ArrayList  pointHandles = new ArrayList( 200 );
  private boolean   visible = true;
  private Rectangle virtualGrabHandle = new Rectangle();
  
  public void paint( Graphics surface ) {
    if ( !visible )
      return;
    int max = pointHandles.size();
    for ( int cntr = 0; cntr < max; cntr++ ) {
      makeHandleFromPoint( (Point) pointHandles.get(cntr) );
      paintHandle( surface );    
    }
  }
  
  public void clear() {
    pointHandles.clear();
  }
  
  public boolean isVisible() {
    return visible;
  }
  
  public void    setVisible( boolean show ) {
    visible = show;
  }

  public boolean wasHandleGrabbed( Point pointTest, Point[] pointRet ) {
    int max = pointHandles.size();
    for ( int cntr = 0; cntr < max; cntr++ ) {
      Point point = (Point) pointHandles.get( cntr );
      makeHandleFromPoint( point );
      if ( virtualGrabHandle.contains(pointTest) ){
        pointRet[0] = point;
        return true;
      }
    }
    return false;
  }
 
  private void makeHandleFromPoint( Point point ) {
    virtualGrabHandle.setBounds( point.x, point.y, 0, 0 );
    virtualGrabHandle.grow( HANDLE_GROW_SZ, HANDLE_GROW_SZ );
  }   
  
  private void paintHandle( Graphics surface ) {
    surface.setColor( Color.blue );
    surface.fillRect( virtualGrabHandle.x, virtualGrabHandle.y, 
                      virtualGrabHandle.width, virtualGrabHandle.height );
  }
}
